Advertisements
Advertisements
प्रश्न
Define the following.
Freezing point
Advertisements
उत्तर
The temperature at which a liquid turns into solid when cooled is known as the freezing point. The freezing point of water is 0°C.
APPEARS IN
संबंधित प्रश्न
Why is it said that-
Water is a universal solvent.
Why is it said that-
There is no alternative to water for cleaning purposes.
State whether the following statement is true or false.
The substance in which a solute dissolves is called a solvent.
Give reasons: Lakes freeze from top towards bottom.
Melting point, enthalpy of vapourisation and viscosity data of \[\ce{H2O}\] and \[\ce{D2O}\] is given below :
| \[\ce{H, O}\] | \[\ce{D2O}\] | |
| Melting point / K | 373.0 | 374.4 |
| Enthalpy of vapourisation at (373 K)/kJ mol–1 | 40.66 | 41.61 |
| Viscosity/centipoise | 0.8903 | 1.107 |
On the basis of this data explain in which of these liquids intermolecular forces are stronger?
Explain why \[\ce{HCl}\] is a gas and \[\ce{HF}\] is a liquid.
Freezing of water will cause an ______ is the volume.
What are the physical properties of pure water?
The density of gold is 19 g/cm3. If 1.9 × 10−4 g of gold is dispersed in one litre of water to give a sol having spherical gold particles of radius 10 nm, the number of gold particles per mm3 of the sol will be ______ × 106.
The water having more dissolved O2 is ______.
